He attended Busan High School.
He bats and throws right-handed. In 2010 Lee led his team to the national championship at the 62nd Hwarang Flag National Championship, racking two wins and posting a 0.78 European Research Area in 23.0 innings pitched in the tourney. He earned tournament Most Valuable Player honors as well.
Notable international appearances
In the 2012 KBO Draft, Lee was selected by the North Carolina Dinos as the first overall pick, along with Number Sung-House
Prior to the 2012 season, Lee had surgery to remove a bone chip from his elbow, and missed the first half of the season. In the 2012 Futures League season, Lee was 0-4 with a 5.49 European Research Area over 19⅔ innings.
Lee started the 2013 season as a setup man and was named the Dinos" closer in May replacing Kim Jin-Sung who posted a 10.50 European Research Area with no save in the opening month of the season.
In August 2011 Lee was selected as a member of the South Korean U-18 national team for the Asian Junior Baseball Championship held in Yokohama, Japan.